See also:

Improved sync
The next generation of the award-winning SYNC system continues to become easier to use and more robust in its operation. New, simpler screen designs improve the user interface. Larger and bolder fon ...

Intelligent access key (ia key)
Your vehicle is equipped with two intelligent access keys which operate the power locks and the remote start system. The IA key must be in the vehicle to activate the push button start syste ...

Second generation (2003–2006)
The Navigator was updated in 2003, along with the Ford Expedition, on the new Ford U platform. The interior was also substantially revised to bring it up to the level expected by luxury buyers. So ...